Results 161 to 170 of about 336,986 (421)
Robust entrainment of circadian oscillators requires specific phase response curves [PDF]
, 2010 The circadian clocks keeping time of day in many living organisms rely on self-sustained biochemical oscillations which can be entrained by external cues, such as light, to the 24-hour cycle induced by Earth rotation. However, environmental cues are unreliable due to the variability of habitats, weather conditions or cue-sensing mechanisms among ...
arxiv +1 more source
The Molecular Clockwork of the Fire Ant Solenopsis invicta [PDF]
, 2012 This is an open-access article, free of all copyright, and may be freely reproduced, distributed, transmitted, modified, built upon, or otherwise used by anyone for any lawful purpose.
A Bateman +62 more
core +2 more sources
The effects of light at night on circadian clocks and metabolism.
Endocrine reviews, 2014 Most organisms display endogenously produced ∼ 24-hour fluctuations in physiology and behavior, termed circadian rhythms. Circadian rhythms are driven by a transcriptional-translational feedback loop that is hierarchically expressed throughout the brain ...
L. Fonken, R. Nelson
semanticscholar +1 more source
A Colorful Model of the Circadian Clock [PDF]
Cell, 2006 The migration of the colorful monarch butterfly provides biologists with a unique model system with which to study the cellular and molecular mechanisms underlying a sophisticated circadian clock. The monarch circadian clock is involved in the induction of the migratory state and navigation over long distances, using the sun as a compass.
openaire +4 more sources
The Anatomical Record, EarlyView.Abstract Hibernation induces significant molecular and cellular adaptations in the retina to maintain function under reduced metabolic conditions. This study aimed to investigate the expression of neuronal, synaptic, and glial markers in the retina of Spermophilus xanthoprymnus during pre‐hibernation and hibernation periods using immunohistochemical ...
Mehmet Özbek +5 more
wiley +1 more source
Synchrony of plant cellular circadian clocks with heterogeneous properties under light/dark cycles
Scientific Reports, 2017 Individual cells in a plant can work independently as circadian clocks, and their properties are the basis of various circadian phenomena. The behaviour of individual cellular clocks in Lemna gibba was orderly under 24-h light/dark cycles despite their ...
Masaaki Okada +3 more
doaj +1 more source
Bio-Protocol, 2017 Circadian rhythms are biological processes displaying an endogenous oscillation with a period of ~24 h. They allow organisms to anticipate and get prepared for the environmental changes caused mainly by the rotation of Earth. Circadian rhythms are driven
Qiang Chen +3 more
doaj +1 more source
Genetic insights on sleep schedules: this time, it's PERsonal. [PDF]
, 2012 The study of circadian rhythms is emerging as a fruitful opportunity for understanding cellular mechanisms that govern human physiology and behavior, fueled by evidence directly linking sleep disorders to genetic mutations affecting circadian molecular ...
Chong, SY Christin +2 more
core +1 more source
Interactive features of proteins composing eukaryotic circadian clocks.
Annual Review of Biochemistry, 2014 Research into the molecular mechanisms of eukaryotic circadian clocks has proceeded at an electrifying pace. In this review, we discuss advances in our understanding of the structures of central molecular players in the timing oscillators of fungi ...
B. Crane, M. W. Young
semanticscholar +1 more source
Stem cells and the circadian clock
Developmental Biology, 2017 The circadian timing system is a complex biological network of interacting circadian clocks that regulates 24 h rhythms of behavioral and physiological processes. One intriguing observation is that stem cell homeostasis is subject to circadian clock regulation.
Weger, Meltem +4 more
openaire +6 more sources